I was going to wait and see, but when they announced dedis I was happy so I decided to get it on launch.
I have not been disappointed one bit. Am I saying the game is perfect? Good lord no! But for me, they put some attention to the #1 issue in the series for the past few years.
We can complain about OP guns
We can complain about colours and graphics
We can complain about gun sounds
etc...
But unless you address the matchmaking (which can seriously contribute to lag), you do not have a playable game (no matter how good it looks). Because they have put some attention to that, I am glad I did not wait. Have I experienced lag? yep... but nowhere (and I mean NOWHERE) near all the BS that was present in BO2 and MW3.
So far this game has played better for me than even BO1 (which now may no longer be my favourite).
Side Bar: This also has been the best launch in years. I feel that when they address some issues (which they are doing), this is going to be a decent game.
* started with PS3 version and upgraded to PS4 fyi